* engravers for Gregorian chant will be added in the future, such as
* Medicaea_ligature_engraver or Hufnagel_ligature_engraver.
*/
-Gregorian_ligature_engraver::Gregorian_ligature_engraver ()
+Gregorian_ligature_engraver::Gregorian_ligature_engraver (Context *c)
+ : Coherent_ligature_engraver (c)
{
pes_or_flexa_req_ = 0;
}